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3 years ago

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What is the correct answer for3(x-1) -8=4(1+x)+5

1 answer:

evablogger [386]3 years ago

7 0

First to figure out the problem you need to distribute the 3 and the 4. You get, 3x-3-8=4+4x+5. Now you need to combine the coefficients. After doing this you will have 3x-11=9+4x. Now to get x by itself you need to subtract 3x from both sides. You will have -11=9+x. Then you subtract 9 from both sides and you end up with x=-20

3(x-1)-8=4(1+x)+5

3x-3-8= 4+4x+5

3x-11=9+4x

-3x -3x

-11=9+x

-9 -9

-20=x

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If 9(x − 9) = −11, then x = ?<br> A. -92/9<br> B. -20/9<br> C. -11/9<br> D. -2/9<br> E. 70/9

kolezko [41]

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Answer:

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Step-by-step explanation:

The formula for the volume of a hemisphere is $\frac{ 2\pi r^{3} }{3}#\\$

Substitute the points and solve.

N.B. $\pi$ has a value of either 3.14 or $\frac{22}{7}$

You can insert $\pi$ directly into your calculator

You now have the volume of the hemisphere.

Density (given) is mass (what we are looking for) divided by volume (what we found in the first step)

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